Grindelia (gumweed) is a genus of plants native to the Americas belonging to the sunflower family. The genus is named for Latvian botanist David Hieronymus Grindel, 1776–1836. Grindelia squarrosa, a plant with bright yellow flowers indigenous to much of the United States, is commonly called curlycup gumweed. Grindelia robusta, found in the western states, is a coastal scrub bush that is reputed to have several medicinal uses. Hairy gumweed, Grindelia cuneifolia, occurs in brackish coastal marshes of western North America, such as in some portions of the San Francisco Bay perimeter.